
// Cloud Float...
var $main = $cloud = mainwidth = null;
var offset1 = 450;
var offset2 = 0;

var offsetbg = 0;

$(document).ready(
    function () {
        $main = $("#mainBody");
        $body = $("body");
        $cloud1 = $("#cloud1");
        $cloud2 = $("#cloud2");

        mainwidth = $main.outerWidth();

    }
);

/// 飘动
setInterval(function flutter() {
    if (offset1 >= mainwidth) {
        offset1 = -580;
    }

    if (offset2 >= mainwidth) {
        offset2 = -580;
    }

    offset1 += 1.1;
    offset2 += 1;
    $cloud1.css("background-position", offset1 + "px 100px");

    $cloud2.css("background-position", offset2 + "px 460px");
}, 70);


setInterval(function bg() {
    if (offsetbg >= mainwidth) {
        offsetbg = -580;
    }

    offsetbg += 0.9;
    $body.css("background-position", -offsetbg + "px 0");
}, 90);
